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Signatures of non-monotonic d-wave gap in electron-doped cuprates
Ilya Eremin, Evelina Tsoncheva, Andrey V. Chubukov
We address the issue whether the data on optical conductivity and Raman scattering in electron-doped cuprates below support the idea that the wave gap in these materials…
Gapless superconductivity and the Fermi arc in the cuprates
A. V. Chubukov, M. R. Norman, A. J. Millis +1
We argue that the Fermi arc observed in angle resolved photoemission measurements in underdoped cuprates can be understood as a consequence of inelastic scattering in a d-wave supe…
Optical Integral in the Cuprates and the Question of Sum Rule Violation
M. R. Norman, A. V. Chubukov, E. van Heumen +2
Much attention has been given to a possible violation of the optical sum rule in the cuprates, and the connection this might have to kinetic energy lowering. The optical integral i…
Spin-wave spectra of a kagome stripe
A. Donkov, A. V. Chubukov
We study ground state degeneracy and spin-wave excitations in a 1D version of a Kagome antiferromagnet -- a Heisenberg antiferromagnet on a Kagome stripe. We show that for nearest-…
Spin-liquid model of the sharp resistivity drop in
A. V. Chubukov, A. M. Tsvelik
We use the phenomenological model proposed in our previous paper [Phys. Rev. Lett. {\bf 98}, 237001 (2007)] to analyse the magnetic field dependence of the onset temperature for tw…
Specific heat of a one-dimensional interacting Fermi system: the role of anomalies
Andrey V. Chubukov, Dmitrii L. Maslov, Ronojoy Saha
We re-visit the issue of the temperature dependence of the specific heat C(T) for interacting fermions in 1D. The charge component C_c(T) scales linearly with T, but the spin compo…